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RULES : Classic Sudoku rules apply. Additionally,
- Killer Sudoku rules apply, i.e., there are some cages in the grid. The number on the top left corner of each cage is equal to the sum of the digits in that cage. Digits do not repeat inside a cage.
- German Whispers Sudoku rules apply, i.e., adjacent digits along each marked line have a difference of at least 5.
- Little Killer Sudoku rules apply, i.e., the numbers with arrows outside the grid indicate the sum of the digits appearing in the cells in the corresponding direction. Digits may repeat in the direction of the arrow.
This was damn hard. 30:33. A complete half an hour exercise that was enjoyable. I thought sets would give a breakthrough but it didn't.
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